diff --git a/swarmlab-app/src/run/app.js b/swarmlab-app/src/run/app.js
index 0c80279..9aae84b 100755
--- a/swarmlab-app/src/run/app.js
+++ b/swarmlab-app/src/run/app.js
@@ -444,7 +444,7 @@ var stream = db.collection('logs').find({}, {
 }).stream();
 
 stream.on('data', function (doc) {
-        console.log('doc ' JSON.stringify(doc)) 
+        console.log('doc ' + JSON.stringify(doc)) 
     //socket.write(JSON.stringify({'action': 'log','param': doc.log}));
 });
       /*